Test substances
Sinupret oral drops
Commercially available Sinupret® was supplied by the manufacturer
as ethanolic solution (19% (V/V), Sinupret oral drops).
100 g of oral drops contained 29 g of an aqueous-ethanolic extract
(extracting agent: ethanol 59% (V/V); drug/extract ratio 1:11) from
Gentianae radix, Primulae flos cum calycibus, Sambuci flos, Rumicis
herba (sorrel) and Verbenae herba; in the fixed ratio of 1:3:3:3:3.
Concentrations of oral drops are given as equivalents of the dry
extract, using the known drug/extract ratios.